Estimating the Cost to Fill a Swimming Pool with Water

Factors Affecting the Cost

Several factors can affect the cost of filling a swimming pool:

1. Pool Size and Volume: The larger the pool, the more water it will require
2. Water Source: Cost varies depending on municipal water, well water, or delivery service
3. Local Water Rates: Rates can vary widely by location
4. Additional Fees: Some municipalities charge extra for large water usage
5. Water Treatment: Chemical treatment adds to the overall cost

Water Source Options

Municipal Water

Most homeowners choose city water, with typical rates ranging from $2 to $5 per 1,000 gallons. Check your local utilities website for specific rates.

Water Delivery Service

Professional delivery services typically charge $200-600 per load, depending on:

• Distance from water source
• Volume needed
• Local competition
• Season and demand

Calculating Pool Volume

To estimate costs, calculate your pool's volume using this formula:

Length × Width × Average Depth × 7.5 = Gallons of Water

Note: 7.5 is the conversion factor from cubic feet to gallons

Common Pool Sizes and Volumes

Pool Size	Average Volume
Small (12' × 24')	10,800 gallons
Medium (15' × 30')	16,875 gallons
Large (20' × 40')	30,000 gallons

For other pool shapes, you may need different formulas. This guide can help you calculate volumes for various shapes.

Estimating Water Costs

Using Municipal Water

1. Check local water rates (usually per 1,000 gallons)
2. Multiply pool volume by water rate
3. Consider additional fees or tiered pricing

Regional Cost Examples

Average costs to fill a 15,000-gallon pool:

• Phoenix, AZ: $75-100
• Atlanta, GA: $100-125
• Los Angeles, CA: $125-150
• New York, NY: $150-175

Additional Costs

Chemical Startup

Initial chemical treatment costs include:

1. Pool shock ($20-40)
2. pH balancers ($15-25)
3. Chlorine stabilizer ($20-30)
4. Test kit ($30-50)

Ongoing Maintenance

Regular maintenance is essential and includes:

• Chemical treatments
• Cleaning
• Professional services
• Equipment costs (pumps, filters)

Money-Saving Tips

Consider these strategies to reduce costs:

• Fill during off-peak seasons
• Check for special pool-filling rates
• Install a pool cover to reduce evaporation
• Consider a rain harvesting system for topping off
• Fix leaks promptly
• Maintain proper chemical balance

For more detailed guidance, visit Water Sense or consult with a pool professional or local water utility.